Have I blocked this IP range correctly?

Comodo Internet Security - CIS Firewall Help - CIS
#1

I’ve been told I need to block the following IP range:
192.64.176.0/20:

First I checked the IP 192.64.176.0 here:
https://whois.domaintools.com/192.64.176.20

From the output I see:
NetRange: 192.64.176.0 - 192.64.191.255
CIDR: 192.64.176.0/20

I then went:
Firewall > Rulesets > Add

Use custom ruleset - checked

Source address:
IP4 Address Range
Start IP: 192.064.176.0
End IP: 192.064.191.255

Destination address:
IP4 Address Range
Start IP: 192.064.176.0
End IP: 192.064.191.255

IP Protocol = Any

Have I done it correctly?

#2

Instead you should add those IP ranges to the blocked network zones list by going to firewall settings > Network zones > Blocked zones > add new blocked address > type IPv4 address range.

#3

@futuretech - Thank you, I’ve changed it to the way you’ve suggested.